tree 9a4937e10c94b29bc15afb154bca93f4c8ea785a
parent 0ed87071d4f1cf442b345d4f78baee8c788203cb
author Marek Vasut <marex@denx.de> 1479118051 +0100
committer Marissa Wall <marissaw@google.com> 1495579638 -0700

BACKPORT: drm/fb_cma_helper: Add drm_fb_cma_prepare_fb() helper

Add new drm_fb_cma_prepare_fb() helper function extracted from the
imx-drm driver. This function checks if the plane has DMABUF attached
to it, extracts the exclusive fence from it and attaches it to the
plane state for the atomic helper to wait on it.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161114100732.3446-1-marex@denx.de
(cherry picked from commit 14d7f96f90fb65c2ca0e0ac7df237e06ff001c29)
Signed-off-by: Marissa Wall <marissaw@google.com>

Change-Id: I3b7adb3c3217eed72e45c53c5c749f6218611df0